Police are still searching for South Australian man Kerry Giakoumis, 29, who went missing after travelling to Melbourne with members of the Hells Angels Outlaw Motorcycle Gang on 5 June.

The missing Greek Australian concreter was last seen at the Hells Angels clubhouse at Lipton Drive, Thomastown, northern Melbourne, in the early hours of 10 June, according to reports by Victoria Police. There are fears that the man may have gone missing after a ‘dispute’ with two bikies.

The Herald Sun describes Giakoumis as “tough enough to be a Hells Angels prospect – a kind of apprentice bikie – with the North Crew Chapter in Adelaide. But probably outnumbered and with his guard down, Giakoumis wouldn’t have had much chance inside the infamous Nomad stronghold on Lipton Drive.”

READ MORE: Police investigate Hells Angels over disappearance of Adelaide man Kerry Giakoumis

It is stated that police fear that Mr Giakoumis may not have walked out of the clubhouse.

His family have been concerned about his fate since he failed to board a return flight to SA on 10 June.

Detectives are concerned that he may not have left the clubhouse.

Anyone with information is urged to contact Crime Stoppers on 1800 333 000.